2p+6a=$14
3p+9a=$21
3p+9a=21
Subtract 9a
3p=21-9a
divide all by 3
p=7-3a
plug it into start equations
2p+6a=14
2(7-3a)+6a=14
14-6a....+6a=14
this zeroes out...
Answer:2.5%
Step-by-step explanation:
2.5% of the school has sibloings
55+45=100
100÷40=2.5
Plug in 35 into the equation P(t)
P(35) = 14(35)^2+650(35)+32,000
Answer:
D
Step-by-step explanation:
Using the rule of logarithms
log x - log y = log(
)
Given
(
)
=
n -
2 → D